As you said, nowhere near hypixel standards. You need a true redstoner for that. Still is passable as a good map. Justa couple tips, add spawning, better guiding, better plot and a more developed color pallete. That is all.

Yes and it's really easy. Watch Sethbling's videos to learn how. Actually, TMI was updated to 1.4.6 and it added a new custom potions feature, where you can make potions up to 10 minutes with all the effects you want up to 4 levels.